cardboard

The Simple English Wikipedia has an article on:

Cardboard

Pronunciation

• IPA ^(key): /ˈkɑːdbɔːd/

• Audio (US)

  (file)

• Hyphenation: card‧board

Noun

Singular cardboard

Plural cardboards

1. (countable & uncountable) Cardboard is a material like paper, but thicker and stiffer.

   Cardboard is used to make boxes.

   I put all my furniture in cardboard boxes to move it.

• 
  A cardboard box
• 
  Pieces of cardboard